基于响应面法的花键套振动冷挤压参数多目标优化  

Multi-objective optimization of spline sleeve vibration cold extrusion parameters based on response surface method

作　　者：王勇[1] 张鹏[1] 张晔[1] 张凯[1] 陈娇娇 陈思远 金平 WANG Yong;ZHANG Peng;ZHANG Ye;ZHANG Kai;CEHN Jiao-jiao;CHEN Si-yuan;JIN Ping(School of Mechanical Engineering,Hefei University of Technology,Hefei 230009,China;Anhui Lecn Equipment Co.,Ltd.,Chizhou 247100,China)

机构地区：[1]合肥工业大学机械工程学院,安徽合肥230009 [2]安徽力成智能装备股份有限公司,安徽池州247100

出　　处：《塑性工程学报》2022年第4期7-13,共7页Journal of Plasticity Engineering

基　　金：安徽省重大科技专项(16030901018)。

摘　　要：为提高花键套的成形质量,以降低花键套振动冷挤压的最大成形载荷和提升齿形晶粒度为优化目标,建立了辅助振动工艺参数与优化目标之间的响应面模型,借助Design-Expert软件进行响应面拟合建模分析,得到了最大成形载荷及齿形晶粒尺寸的二阶响应面模型,并借助遗传算法对响应面模型进行优化,获得了最优的辅助振动工艺参数组合,即振动频率为12.59 Hz,振幅为1 mm,凸模的挤压速度为13.54 mm·s^(-1)。有限元模拟优化结果表明:优化后的工艺参数组合能降低最大成形载荷,获得较小的齿形晶粒尺寸,有助于提高零件的表面质量和力学性能。To improve the forming quality of spline sleeve,taking the reduce of the maximum forming load of spline sleeve in vibration cold extrusion and the tooth grain size as the optimization objectives,the response surface model between the auxiliary vibration process parameters and the optimization objectives was established.The response surface fitting modeling analysis was carried out by Design-Expert software,and the second-order response surface model of the maximum forming load and tooth grain size was obtained.The response surface model was optimized by genetic algorithm to obtain the optimal combination of auxiliary vibration process parameters.The vibration frequency,amplitude and extrusion speed of convex are 12.59 Hz,1 mm and 13.54 mm·s^(-1),respectively.The optimization results of finite element simulation show that the optimized combination of process parameters can reduce the maximum forming load and obtain smaller tooth grain size,which is helpful to improve the surface quality and mechanical properties of parts.

关 键 词：振动冷挤压 响应面法 遗传算法 工艺优化 

分 类 号：TG375[金属学及工艺—金属压力加工]